Bobebt boutet



R. BOUTET.

APPARAUS FOR DISTILLING GLYCERIN.

APPLICATlON FILED MAY 22. 1918.

l DQQQL., Patented June 17, 1919.

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ROBERT BOUTET, 0F PARIS, FRANCE, ASSIGN OR TO LA SOCIETE FRANCAISE DES GLYCERINES, 0F

PARIS, FRANCE.

Lacasse.

Specification of Letters Patent.

Patented .nine iv, isis.

Application med May 22, 191s. seran No. 236,024..

To all whom z'z may concern:

Be it known that I, ROBERT BoUTET, citizen of the Republic of France, and resident of Paris, France, (post-ofH-ce address, 28 Rue de Richelieu,) have invented a newand useful Apparatus for Distilling Glycerin, which improvements are fully set forth in the following specification.

This invention relates to an apparatus, by means of which the distillation of glycerin can be carried out in specially favorable conmore and more impure,

ditions.

An apparatus constructed in accordance with the invention is illustrated by way of example in the accompanying drawing in which- Figure 1 is a side elevation,

Fig. 2 is a plan, and

Fig. 3 shows, on an enlarged scale, details of the atomizer.

The process involved in the invention consists in distilling glycerin by atomizin it by means of steam, nitrogen, air or any ot er desired gas, in a chamber heated to the desired temperature (about 180 0.), as distinguished from simply distilling glycerin in a still, which has the drawback that the liquid becomes more `and more thick and the result being that some of the glycerin is lost, the distilledglycerin is less pure, and the yield of the apparatus less high. The process according to the present invention obviates the said drawbacks.

The apparatus forming the subject of the present invention makes 1t possible to carry out the process of distil ation by atomizing, mentioned above.

The apparatus is constituted by a sheet metal cylinder A containing glycerin, in the interior of which is placed a concentric cylinder B in which the atomizing takes place.

In the vessel A, the glycerin is heated by a coil and raised to 180 C.; the vessel is suplied in a continuons manner by vacuum eed, and the level of the glycerin is main- .tained constant owing to the provision of a float cock C. p y

Thevessel A communicates with a water condenser through a pipe D, so that any impurities volatilized .below 1800 C., can es'- cape into the said condenser. The vacuum is regulated to` a given value by a valve E arranged in the pipe D.

The vessel A also has a vaccum gage L, a drain cock F and a pipe G terminating in a rose, which conveys glycerin to the atomizers H; the vessel B, or atomizing chamber, has a drain'cock Lconnected to a drum collector for the residues which are produced as the distillation proceeds, and which must be discharged without stopping the apparatus.

The vessel B communicates at the top, through a pipe S, with a series of condensers, and also carries a vacuum gage K.

The atomizers H, to the number of three, are mounted on the top of the vessel A at the apices of an imaginary equilateral triangle inscribed within an imaginary circle described from the center of said top with a radius equal to two-thirds of that of the tical, and their jets are directed downward.

Supply of glycerin to the atomizers is obtained and insured, on the one hand, by the pipe G with the rose, and on the other hand by an injection of steam through a pipe M and by a regulation of the difference of vacuum between the vessels A and B, which regulation is effected to suit the difference of level of the atomizers and of the glycerin, and in accordance with the output to be obtained.

ln operation, and as previously'stated, the glycerin in the vessel A is heated by the coil therein to a temperature of ap roximately 180o C., the level of the glycerin eing maintained constant by means of the float valve C. From said vessel A, the glycerin is supplied, by way of the pipe G, ,to the several atomizers H which, in turn, extend into the central vessel or chamber B, wherein the atomizing takes place. Both vessels A and B are under vacuum, but to di'erent degrees, this difference in degree being utilized to effeet, in part, the passage of the glycerin from the outer or heating vessel A to the inner vessel B, and being regulated according to the difference of level between the atomizersA and the surface ofthe glycerin. The pipe M, by supplying steam to the atomizers, also serves to effect the feed of the glycerin thereto, and in addition actsin the usual way to eliect the actual atomizing operation. As distillation if any, which are aov ' densers may be of any desired type and,v

glycerin of any kind, and to separate any` mineral or organic impurities.

The vessels A and B, instead of being combined, may be independent of each other.

No claim is made herein to the method of operation,- as such method forms the subject of my companion application, Serial No. 236,023, sled May 22, 1918.

,I Claim as my invention:

A distilling apparatus ofthe character specified, comprising, in combination, a vessel to contain the liquid to be distilled; a heating coil Within said Vessel, means for maintaining the liquid at a constant level in said vessel; an atomizing vessel; a plurality of 20 atomizers mounted upon and projecting downwardly into the last-named vessel; a supply pipe to said atomizers from a point below the level rof the liquid in the irstnamed vessel; means for vmaintaining both 25 specification in the presence of two subscribing witnesses.l

- ROBERT BOUTET.

Witnesses:

GEORGE LoIsEL', JOHN F. SIMoNs. 

